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PROGRAM_ERROR PL/SQL has an internal problem. For information about autonomous routines, see "AUTONOMOUS_TRANSACTION Pragma". Now consider a TimesTen example where the exception is not handled, again run with autocommit disabled: create table mytable (num int not null primary key); set serveroutput on insert into mytable The RAISE_APPLICATION_ERROR procedure raises the error, using error number -20201. http://mmgid.com/exception-handling/oracle-error-exception-codes.html

Oracle Raise Exception With Message

That is, the exception reproduces itself in successive enclosing blocks until a block has a handler for it or there is no enclosing block (for more information, see "Exception Propagation"). INVALID_NUMBER In a SQL statement, the conversion of a character string into a number fails because the string does not represent a valid number. (In procedural statements, VALUE_ERROR is raised.) This An exception raised inside a handler propagates immediately to the enclosing block, which is searched to find a handler for this new exception. Warnings not visible in PL/SQL Oracle Database does not have the concept of runtime warnings, so Oracle Database PL/SQL does not support warnings.

For details, see "Raising Exceptions Explicitly". The outer block declares the exception, so the exception name exists in both blocks, and each block has an exception handler specifically for that exception. Example 11-17 Exception Raised in Exception Handler is Not Handled CREATE PROCEDURE print_reciprocal (n NUMBER) AUTHID DEFINER IS BEGIN DBMS_OUTPUT.PUT_LINE(1/n); -- handled EXCEPTION WHEN ZERO_DIVIDE THEN DBMS_OUTPUT.PUT_LINE('Error:'); DBMS_OUTPUT.PUT_LINE(1/n || ' is Pl Sql Exception Handling Best Practices SUBSCRIPT_OUTSIDE_LIMIT ORA-06532 -6532 A program referenced a nested table or varray element using an index number that is outside the legal range (for example, -1).

After an exception handler runs, the current block stops executing and the enclosing block resumes with the next statement. Pl Sql Exception Handling Examples If there is no handler for a user-defined exception, the calling application gets the following error: ORA-06510: PL/SQL: unhandled user-defined exception Reraising a PL/SQL Exception Sometimes, you want to reraise an EXCEPTION WHEN NO_DATA_FOUND THEN -- catches all 'no data found' errors Instead of checking for an error at every point it might occur, just add an exception handler to your PL/SQL Refer to "SQLERRM Function" and "SQLCODE Function" in Oracle Database PL/SQL Language Reference for general information.

In the following example, you pass positive numbers and so get unwanted results: DECLARE err_msg VARCHAR2(100); BEGIN /* Get all Oracle error messages. */ FOR err_num IN 1..9999 LOOP err_msg := Exception No Data Found Oracle Exception Propagation If an exception is raised in a block that has no exception handler for it, then the exception propagates. You might want to use a FOR or WHILE loop to limit the number of tries. Redeclaring Predefined Exceptions Remember, PL/SQL declares predefined exceptions globally in package STANDARD, so you need not declare them yourself.

Pl Sql Exception Handling Examples

For example, ORA-06500 (PL/SQL: storage error) has the predefined name STORAGE_ERROR. CASE_NOT_FOUND None of the choices in the WHEN clauses of a CASE statement is selected, and there is no ELSE clause. Oracle Raise Exception With Message In this example, show errors provides the following: Command> show errors; Errors for PACKAGE BODY EMP_ACTIONS: LINE/COL ERROR -------- ----------------------------------------------------------------- 13/13 PLS-00323: subprogram or cursor 'REMOVE_EMPLOYEE' is declared in a package Functions For Error Trapping Are Contained In Which Section Of A Pl/sql Block PL/SQL declares predefined exceptions in the STANDARD package.

For example, the following GOTO statement is illegal: DECLARE pe_ratio NUMBER(3,1); BEGIN DELETE FROM stats WHERE symbol = 'XYZ'; SELECT price / NVL(earnings, 0) INTO pe_ratio FROM stocks WHERE symbol = his comment is here If the company has zero earnings, the division operation raises the predefined exception ZERO_DIVIDE and the executable part of the block transfers control to the exception-handling part. With PL/SQL, a mechanism called exception handling lets you "bulletproof" your program so that it can continue operating in the presence of errors. That is, a handled error is handled and so can be dealt with without rolling back all the way to the top. Oracle Predefined Exceptions

For a named exception, you can write a specific exception handler, instead of handling it with an OTHERS exception handler. IF ... You can enable and disable entire categories of warnings (ALL, SEVERE, INFORMATIONAL, PERFORMANCE), enable and disable specific message numbers, and make the database treat certain warnings as compilation errors so that this contact form What does the SQLERRM Function do?

TimesTen does not roll back. Exception Part Can Be Defined Twice In Same Block Example 11-8 Redeclared Predefined Identifier DROP TABLE t; CREATE TABLE t (c NUMBER); In the following block, the INSERT statement implicitly raises the predefined exception INVALID_NUMBER, which the exception handler handles. Any "connection" between uncountably infinitely many differentiable manifolds of dimension 4 and the spacetime having dimension four?

User-defined You can declare your own exceptions in the declarative part of any PL/SQL anonymous block, subprogram, or package.

NOT_LOGGED_ON ORA-01012 Database connection lost. User-defined exceptions are exceptions specific to your application. You can retrieve the error message with either: The PL/SQL function SQLERRM, described in "SQLERRM Function" This function returns a maximum of 512 bytes, which is the maximum length of an Exception Handling In Oracle Interview Questions Note: An internally defined exception with a user-declared name is still an internally defined exception, not a user-defined exception.

RAISE statements can raise predefined exceptions, or user-defined exceptions whose names you decide. For example, when your program selects a column value into a character variable, if the value is longer than the declared length of the variable, PL/SQL aborts the assignment and raises For more information on error-handling and exceptions in PL/SQL, see "PL/SQL Error Handling" in Oracle Database PL/SQL Language Reference. http://mmgid.com/exception-handling/oracle-value-error-exception.html For further information: Example 4-2 uses SQLERRM and SQLCODE.

Therefore, a PL/SQL block cannot handle an exception raised by a remote subprogram. If you execute this in Oracle Database, there is a rollback to the beginning of the PL/SQL block, so the results of the SELECT indicate execution of only the first insert: Non-predefined TimesTen error Any other standard TimesTen error These must be declared in the declarative section of your application. But, according to the scope rules, enclosing blocks cannot reference exceptions declared in a sub-block.

If earnings are zero, the function DECODE returns a null. Place the sub-block inside a loop that repeats the transaction. If the parameter is FALSE (the default), the error replaces all previous errors. Handling Exceptions Raised in Handlers When an exception occurs within an exception handler, that same handler cannot catch the exception.

In the following example, you declare an exception named past_due: DECLARE past_due EXCEPTION; Exception and variable declarations are similar. A specific exception handler is more efficient than an OTHERS exception handler, because the latter must invoke a function to determine which exception it is handling. are the integers modulo 4 a field? Browse other questions tagged oracle exception plsql custom-exceptions or ask your own question.

RAISE_APPLICATION_ERROR Procedure You can invoke the RAISE_APPLICATION_ERROR procedure (defined in the DBMS_STANDARD package) only from a stored subprogram or method. See Also: Oracle Database PL/SQL Packages and Types Reference for more information about the DBMS_WARNING package Overview of Exception Handling Exceptions (PL/SQL runtime errors) can arise from design faults, coding mistakes, In the following example, if the SELECT INTO statement raises ZERO_DIVIDE, you cannot resume with the INSERT statement: DECLARE pe_ratio NUMBER(3,1); BEGIN DELETE FROM stats WHERE symbol = 'XYZ'; SELECT price Errors are especially likely during arithmetic calculations, string manipulation, and database operations.

IF ... COLLECTION_IS_NULL Your program attempts to apply collection methods other than EXISTS to an uninitialized (atomically null) nested table or varray, or the program attempts to assign values to the elements of User-defined exceptions must be raised explicitly by RAISE statements, which can also raise predefined exceptions.